diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/e820.c | 72 | ||||
| -rw-r--r-- | arch/x86/kernel/e820_32.c | 29 | ||||
| -rw-r--r-- | arch/x86/kernel/e820_64.c | 92 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 8 | ||||
| -rw-r--r-- | arch/x86/mach-default/setup.c | 47 | ||||
| -rw-r--r-- | arch/x86/mm/init_64.c | 12 |
7 files changed, 86 insertions, 176 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index dc3c636d113..bcc2b123dab 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -22,7 +22,7 @@ obj-y += setup_$(BITS).o i8259_$(BITS).o setup.o obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o -obj-y += bootflag.o e820_$(BITS).o e820.o +obj-y += bootflag.o e820.o obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o obj-y += alternative.o i8253.o pci-nommu.o obj-$(CONFIG_X86_64) += bugs_64.o diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 432c4917857..49477484a2f 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -1029,4 +1029,76 @@ void __init e820_reserve_resources(void) } } +char *__init __attribute__((weak)) machine_specific_memory_setup(void) +{ + char *who = "BIOS-e820"; + int new_nr; + /* + * Try to copy the BIOS-supplied E820-map. + * + * Otherwise fake a memory map; one section from 0k->640k, + * the next section from 1mb->appropriate_mem_k + */ + new_nr = boot_params.e820_entries; + sanitize_e820_map(boot_params.e820_map, + ARRAY_SIZE(boot_params.e820_map), + &new_nr); + boot_params.e820_entries = new_nr; + if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) { +#ifdef CONFIG_X86_64 + early_panic("Cannot find a valid memory map"); +#else + unsigned long mem_size; + + /* compare results from other methods and take the greater */ + if (boot_params.alt_mem_k + < boot_params.screen_info.ext_mem_k) { + mem_size = boot_params.screen_info.ext_mem_k; + who = "BIOS-88"; + } else { + mem_size = boot_params.alt_mem_k; + who = "BIOS-e801"; + } + + e820.nr_map = 0; + e820_add_region(0, LOWMEMSIZE(), E820_RAM); + e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM); +#endif + } + + /* In case someone cares... */ + return who; +} + +/* Overridden in paravirt.c if CONFIG_PARAVIRT */ +char * __init __attribute__((weak)) memory_setup(void) +{ + return machine_specific_memory_setup(); +} + +void __init setup_memory_map(void) +{ + printk(KERN_INFO "BIOS-provided physical RAM map:\n"); + e820_print_map(memory_setup()); +} + +#ifdef CONFIG_X86_64 +int __init arch_get_ram_range(int slot, u64 *addr, u64 *size) +{ + int i; + if (slot < 0 || slot >= e820.nr_map) + return -1; + for (i = slot; i < e820.nr_map; i++) { + if (e820.map[i].type != E820_RAM) + continue; + break; + } + if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT)) + return -1; + *addr = e820.map[i].addr; + *size = min_t(u64, e820.map[i].size + e820.map[i].addr, + max_pfn << PAGE_SHIFT) - *addr; + return i + 1; +} +#endif diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c deleted file mode 100644 index 1205ccf086d..00000000000 --- a/arch/x86/kernel/e820_32.c +++ /dev/null @@ -1,29 +0,0 @@ -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/bootmem.h> -#include <linux/ioport.h> -#include <linux/string.h> -#include <linux/kexec.h> -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/pfn.h> -#include <linux/uaccess.h> - -#include <asm/pgtable.h> -#include <asm/page.h> -#include <asm/e820.h> -#include <asm/setup.h> - -/* Overridden in paravirt.c if CONFIG_PARAVIRT */ -char * __init __attribute__((weak)) memory_setup(void) -{ - return machine_specific_memory_setup(); -} - -void __init setup_memory_map(void) -{ - printk(KERN_INFO "BIOS-provided physical RAM map:\n"); - e820_print_map(memory_setup()); -} - diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c deleted file mode 100644 index cb03bff9fa2..00000000000 --- a/arch/x86/kernel/e820_64.c +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Handle the memory map. - * The functions here do the job until bootmem takes over. - * - * Getting sanitize_e820_map() in sync with i386 version by applying change: - * - Provisions for empty E820 memory regions (reported by certain BIOSes). - * Alex Achenbach <xela@slit.de>, December 2002. - * Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> - * - */ -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/bootmem.h> -#include <linux/ioport.h> -#include <linux/string.h> -#include <linux/kexec.h> -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/pfn.h> -#include <linux/pci.h> - -#include <asm/pgtable.h> -#include <asm/page.h> -#include <asm/e820.h> -#include <asm/proto.h> -#include <asm/setup.h> -#include <asm/sections.h> -#include <asm/kdebug.h> -#include <asm/trampoline.h> - -/* - * PFN of last memory page. - */ -unsigned long end_pfn; - -/* - * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. - * The direct mapping extends to max_pfn_mapped, so that we can directly access - * apertures, ACPI and other tables without having to play with fixmaps. - */ -unsigned long max_pfn_mapped; - -static void early_panic(char *msg) -{ - early_printk(msg); - panic(msg); -} - -/* We're not void only for x86 32-bit compat */ -char *__init machine_specific_memory_setup(void) -{ - char *who = "BIOS-e820"; - int new_nr; - /* - * Try to copy the BIOS-supplied E820-map. - * - * Otherwise fake a memory map; one section from 0k->640k, - * the next section from 1mb->appropriate_mem_k - */ - new_nr = boot_params.e820_entries; - sanitize_e820_map(boot_params.e820_map, - ARRAY_SIZE(boot_params.e820_map), - &new_nr); - boot_params.e820_entries = new_nr; - if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) - early_panic("Cannot find a valid memory map"); - printk(KERN_INFO "BIOS-provided physical RAM map:\n"); - e820_print_map(who); - - /* In case someone cares... */ - return who; -} - -int __init arch_get_ram_range(int slot, u64 *addr, u64 *size) -{ - int i; - - if (slot < 0 || slot >= e820.nr_map) - return -1; - for (i = slot; i < e820.nr_map; i++) { - if (e820.map[i].type != E820_RAM) - continue; - break; - } - if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT)) - return -1; - *addr = e820.map[i].addr; - *size = min_t(u64, e820.map[i].size + e820.map[i].addr, - max_pfn << PAGE_SHIFT) - *addr; - return i + 1; -} diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index ec65696ca2c..3220c7b56eb 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -266,12 +266,6 @@ static inline void __init reserve_crashkernel(void) {} #endif -/* Overridden in paravirt.c if CONFIG_PARAVIRT */ -void __attribute__((weak)) __init memory_setup(void) -{ - machine_specific_memory_setup(); -} - #ifdef CONFIG_PCI_MMCONFIG extern void __cpuinit fam10h_check_enable_mmcfg(void); extern void __init check_enable_amd_mmconf_dmi(void); @@ -316,7 +310,7 @@ void __init setup_arch(char **cmdline_p) ARCH_SETUP - memory_setup(); + setup_memory_map(); copy_edd(); if (!boot_params.hdr.root_flags) diff --git a/arch/x86/mach-default/setup.c b/arch/x86/mach-default/setup.c index 7ae692a7676..2f5e277686b 100644 --- a/arch/x86/mach-default/setup.c +++ b/arch/x86/mach-default/setup.c @@ -142,50 +142,3 @@ static int __init print_ipi_mode(void) late_initcall(print_ipi_mode); -/** - * machine_specific_memory_setup - Hook for machine specific memory setup. - * - * Description: - * This is included late in kernel/setup.c so that it can make - * use of all of the static functions. - **/ - -char * __init machine_specific_memory_setup(void) -{ - char *who; - int new_nr; - - - who = "BIOS-e820"; - - /* - * Try to copy the BIOS-supplied E820-map. - * - * Otherwise fake a memory map; one section from 0k->640k, - * the next section from 1mb->appropriate_mem_k - */ - new_nr = boot_params.e820_entries; - sanitize_e820_map(boot_params.e820_map, - ARRAY_SIZE(boot_params.e820_map), - &new_nr); - boot_params.e820_entries = new_nr; - if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) - < 0) { - unsigned long mem_size; - - /* compare results from other methods and take the greater */ - if (boot_params.alt_mem_k - < boot_params.screen_info.ext_mem_k) { - mem_size = boot_params.screen_info.ext_mem_k; - who = "BIOS-88"; - } else { - mem_size = boot_params.alt_mem_k; - who = "BIOS-e801"; - } - - e820.nr_map = 0; - e820_add_region(0, LOWMEMSIZE(), E820_RAM); - e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM); - } - return who; -} diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index b8c2c1ef7ad..5266f3141d6 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -47,6 +47,18 @@ #include <asm/numa.h> #include <asm/cacheflush.h> +/* + * PFN of last memory page. + */ +unsigned long end_pfn; + +/* + * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. + * The direct mapping extends to max_pfn_mapped, so that we can directly access + * apertures, ACPI and other tables without having to play with fixmaps. + */ +unsigned long max_pfn_mapped; + static unsigned long dma_reserve __initdata; DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); |